package com.atguigu.gulimail.product.service.impl;

import com.atguigu.common.utils.PageUtils;
import com.atguigu.common.utils.Query;
import com.atguigu.gulimail.product.dao.ProductAttrValueDao;
import com.atguigu.gulimail.product.entity.ProductAttrValueEntity;
import com.atguigu.gulimail.product.service.ProductAttrValueService;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.List;
import java.util.Map;


@Service("productAttrValueService")
public class ProductAttrValueServiceImpl extends ServiceImpl<ProductAttrValueDao,
        ProductAttrValueEntity> implements ProductAttrValueService {

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<ProductAttrValueEntity> page = this.page(
                new Query<ProductAttrValueEntity>().getPage(params),
                new QueryWrapper<ProductAttrValueEntity>()
        );

        return new PageUtils(page);
    }

    @Override
    public List<ProductAttrValueEntity> queryAttrBySpuId(Long spuId) {
        final List<ProductAttrValueEntity> entities =
                this.baseMapper.selectList(new QueryWrapper<ProductAttrValueEntity>().eq("spu_id"
                        , spuId));
        return entities;
    }

    @Transactional
    @Override
    public void updateSpuAttr(Long spuId, List<ProductAttrValueEntity> items) {
        //delete all  then insert.
        this.baseMapper.delete(new QueryWrapper<ProductAttrValueEntity>().eq("spu_id", spuId));
        for (ProductAttrValueEntity item : items) {
            item.setSpuId(spuId);
            this.baseMapper.insert(item);
        }
    }
}